14 THE CANADIAN ENTOMOLOGIST. 



8. Fore tarsi with lateral tufts of hair on the joints Ci/una. 



Fore tarsi without these tufts Aroa. 



9. Fore tarsi smooth haired ; palpi long Laelia (4). 



Fore tarsi more roughly haired or tufted 10. 



10. Palpi not reaching beyond the front Orgyia (5). 



Palpi reaching beyond the front Oiene (6). 



11. Palpi slight, closely approximated to the front and not 



reaching the vertex Daplasa. 



Palpi reaching the vertex Numenes. 



Palpi reaching above the vertex Pida. 



1 2. Primaries with veins 7 to 10 stalked 13. 



Primaries with veins 8 to 10 stalked 23. 



Primaries with vein 10 from the cell, or rarely stalked with 1 1 .... 24. 



13. Palpi upturned 14- 



Palpi porrect 17. 



14. Primaries with the apex rounded 15. 



Primaries with the apex acute Topoinesa. 



15. Primaries with vein 10 given off near the apex Heracida. 



Primaries with vein 10 given oflf nearer the cell than vein 7 16. 



16. Female with well developed wings Lymantria (8). 



Female with aborted wings Enome (9). 



17. Posterior tibise with two pairs of spurs 18. 



Posterior tibiae with one pair of spurs 21. 



18. Palpi short 19. 



Palpi long . , 22. 



19. Vein 5 of secondaries absent Leucoma (12). 



Vein 5 of secondaries present 20. 



20. Primaries with vein 10 given off near the apex Euproctis (13). 



Primaries with vein 10 nearer the cell, or with vein 7 Cispia. 



2 1. Palpi very minute Perina. 



Palpi rather long Paroaieria (10). 



22. Antennae of female with long pectinations Imaus. 



Antennae of the female with short pectinations Ocneria (i i). 



23. Vein 5 of secondaries near lower angle of cell ; palpi 



very long Dactylorhyncha, 



Vein 5 near upper angle of cell ; veins 3 and 4 united. . . . Gazelina. 



24. Palpi porrect 25. 



Palpi upturned Arctornis (14). 



